>----------
>From: Pascuzzi Domenico[SMTP:[EMAIL PROTECTED]]
>Sent: Tuesday, October 26, 1999 2:27 PM
>To: [EMAIL PROTECTED]
>Subject: Some question about EJB
>
>Good Morning!
>I'm an italian student, Domenico.
>I will be very grateful if you could answer me about Some EJB question:
>1. a bean instance (session and entity) has a own remote class?
Ans. Yes.
>2. all instances of a bean share the same instance of home class or an
>instance has a own home class?
Ans. an instance has a own home class
>3. What are the advantages in keeping session with session bean and EJB
>instead of Session Tracking and Servlet?
Ans. EJBeans have the business transactional behaviour.
>4. What are the advantages in using bean-managed transaction instead of
>container-managed ones?
Ans. Less transactional overheads.
>5. Does J2ee function as Web server or is it necessary to install Java
>Web Server or Apache?
Ans. No J2EE provides a reference EJB server .U have to use web server.
>6. About transction isolation levels:
>is it true that if I use stored procedures the isolation is a matter
>of DBMS, while if I use SQL statement the isolation is a matter of
>programmer
>(I mean if I use stored proc, must I declare transaction isolation
>level?) ??
Somebody else will answere
>7. Is it true that an entity bean is compelled to use container-managed
>transaction? Why?
Yes.
>8. May I defini a session bean that has an entity bean as its own field
No.
>I hope you will answer me asap, because it's very important for my
>thesis.
>Thanks in advance for the patience!
>
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